U.S. patent number 11,216,103 [Application Number 16/320,266] was granted by the patent office on 2022-01-04 for pressure touch control display apparatus and control method therefor.
This patent grant is currently assigned to BOE TECHNOLOGY GROUP CO., LTD.. The grantee listed for this patent is BOE TECHNOLOGY GROUP CO., LTD.. Invention is credited to Chunfang Zhang, Xiangxiang Zou.
United States Patent |
11,216,103 |
Zhang , et al. |
January 4, 2022 |
Pressure touch control display apparatus and control method
therefor
Abstract
A pressure touch control display apparatus and a control method
therefor. The pressure touch control display apparatus includes a
backlight module, a piezoelectric component and a monitoring
circuit, wherein the piezoelectric component is arranged on a
reflection sheet of the backlight module, and the piezoelectric
component is deformed under the action of a pressure and generates
an electrical signal corresponding to the pressure; and the
monitoring circuit is electrically connected to the piezoelectric
component, and the monitoring circuit is used for monitoring the
electrical signal generated by the piezoelectric component.
Inventors: |
Zhang; Chunfang (Beijing,
CN), Zou; Xiangxiang (Beijing, CN) |
Applicant: |
Name |
City |
State |
Country |
Type |
BOE TECHNOLOGY GROUP CO., LTD. |
Beijing |
N/A |
CN |
|
|
Assignee: |
BOE TECHNOLOGY GROUP CO., LTD.
(Beijing, CN)
|
Family
ID: |
1000006030634 |
Appl.
No.: |
16/320,266 |
Filed: |
May 15, 2018 |
PCT
Filed: |
May 15, 2018 |
PCT No.: |
PCT/CN2018/086826 |
371(c)(1),(2),(4) Date: |
January 24, 2019 |
PCT
Pub. No.: |
WO2018/228114 |
PCT
Pub. Date: |
December 20, 2018 |
Prior Publication Data
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|
|
|
Document
Identifier |
Publication Date |
|
US 20190272075 A1 |
Sep 5, 2019 |
|
Foreign Application Priority Data
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|
|
|
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Jun 16, 2017 [CN] |
|
|
201710456706.2 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G02F
1/13338 (20130101); G02F 1/133394 (20210101); G02F
1/133602 (20130101); G06F 3/0412 (20130101); G06F
3/04144 (20190501); G06F 3/0416 (20130101); G02F
1/133305 (20130101); G06F 3/0447 (20190501); G06F
3/04146 (20190501); G06F 3/0414 (20130101); G06F
3/041 (20130101); G06F 2203/04105 (20130101); G02F
1/133605 (20130101) |
Current International
Class: |
G06F
3/041 (20060101); G06F 3/044 (20060101); G02F
1/1333 (20060101); G02F 1/13357 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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205158318 |
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Apr 2016 |
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CN |
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105824468 |
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Aug 2016 |
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CN |
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106155421 |
|
Nov 2016 |
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CN |
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206209645 |
|
May 2017 |
|
CN |
|
107272953 |
|
Oct 2017 |
|
CN |
|
Other References
First Chinese Office Action dated Mar. 1, 2019. cited by applicant
.
International Search Report and Written Opinion dated Jul. 31,
2018. cited by applicant.
|
Primary Examiner: Mercedes; Dismery
Attorney, Agent or Firm: Dilworth & Barrese, LLP.
Musella, Esq.; Michael J.
Claims
What is claimed is:
1. A force touch display device comprising a backlight module,
wherein the backlight module comprises a back plate, a
light-emitting assembly disposed in the back plate, a reflection
sheet and a diffusion sheet, the force touch display device further
comprises a piezoelectric component, the piezoelectric component is
on the reflection sheet of the backlight module, the piezoelectric
component is configured to be deformed under an action of a
pressing force and generate an electrical signal corresponding to
the pressing force, the force touch display device further
comprises a detection circuit, wherein the detection circuit is
electrically connected with the piezoelectric component and
configured to detect the electrical signal generated by the
piezoelectric component, wherein the piezoelectric component
comprises a piezoelectric film and a plurality of support members,
the plurality of support members are evenly distributed directly on
a surface of the reflection sheet away from the piezoelectric film
and directly contact with the reflection sheet, the piezoelectric
film is located on a surface of the reflection sheet away from the
diffusion sheet and directly contact with the reflection sheet, and
the piezoelectric film is electrically connected with the detection
circuit, the piezoelectric film, the reflection sheet, the support
members, and the diffusion sheet are located on the back plate in
sequence.
2. The force touch display device according to claim 1, wherein the
piezoelectric film is formed of piezoelectric polymer material.
3. The force touch display device according to claim 2, wherein the
piezoelectric film is formed of polyvinylidene fluoride.
4. The force touch display device according to claim 1, wherein the
piezoelectric film covers an entirety of the surface of the
reflection sheet facing away from the diffusion sheet; or the
piezoelectric film comprises a plurality of strip-shaped structures
arranged in parallel with each other, each of the strip-shaped
structures is arranged corresponding to at least one of the
plurality of the support members, and each of the strip-shaped
structures is electrically connected with the detection circuit; or
the piezoelectric film comprises a plurality of block-shaped
structures arranged evenly, each of the plurality of block-shaped
structures is arranged corresponding to at least one of the
plurality of support members, and each of the block-shaped
structures is electrically connected with the detection
circuit.
5. The force touch display device according to claim 1, wherein the
base is fixed on the reflection sheet and the support post extends
toward the diffusion sheet, and the base is fixed on a surface of
the reflection sheet facing the diffusion sheet, or the reflection
sheet is provided with a plurality of recesses on a surface of the
reflection sheet facing the diffusion sheet, and the base is fixed
in a corresponding one of the plurality of recesses.
6. The force touch display device according to claim 1, wherein the
force touch display device further comprises a processing chip, the
processing chip is electrically connected with the detection
circuit, and the processing chip is configured to activate a force
touch function of the force touch display device according to the
electrical signal generated by the piezoelectric component and
detected by the detection circuit.
7. A force touch display device comprising a backlight module, the
backlight module comprises a back plate, a light-emitting assembly
disposed in the back plate, a reflection sheet and a diffusion
sheet, wherein the force touch display device further comprises a
piezoelectric component, the piezoelectric component is on the
reflection sheet of the backlight module, the piezoelectric
component is configured to be deformed under an action of a
pressing force and generate an electrical signal corresponding to
the pressing force, wherein the piezoelectric component comprises a
plurality of support members, each of the support members comprises
a base and a support post, the reflection sheet is configured to
reflect light from a light-emitting element of the light-emitting
assembly, a plurality of support posts are evenly distributed on a
surface of the reflection sheet facing the diffusion sheet of the
backlight module and a plurality of bases are provided on the
reflection sheet and directly contact with the reflection sheet,
the plurality of support posts are provided on a side of the base
opposite to the reflection sheet and directly contact with the
base, the plurality of support members are electrically connected
with the detection circuit, and the plurality of support members
are formed of piezoelectric material, the reflection sheet, the
support members, and the diffusion sheet are located on the back
plate in sequence, and the plurality of support members and the
plurality of bases are located between the reflection sheet and the
diffusion sheet.
8. The force touch display device according to claim 7, further
comprising a display panel, wherein the diffusion sheet is between
the display panel and the reflection sheet.
9. The force touch display device according to claim 7, wherein the
base is fixed on the reflection sheet and the support post extends
toward the diffusion-sheet, and the base is fixed on a surface of
the reflection sheet facing the diffusion sheet, or the reflection
sheet is provided with a plurality of recesses on a surface of the
reflection sheet facing the diffusion-sheet, and the base is fixed
in a corresponding one of the plurality of recesses.
Description
The present application claims priority to the Chinese patent
application No. 201710456706.2, filed on Jun. 16, 2017, the entire
disclosure of which is incorporated herein by reference as part of
the present application.
TECHNICAL FIELD
Embodiments of the present disclosure relate to a force touch
display device and a control method thereof.
BACKGROUND
The force touch display device is much widely applied in the
display technology field of various industries. When being touched
and pressed in the touch area by a user, the force touch display
device can sense a touched position and a touch force in the touch
area, so that human-device interaction can be realized only by
touching and pressing a pattern or a text in the touch area by the
user.
A force touch display device generally includes a force sensing
component, a signal detection circuit, and a processing chip. The
force sensing component is configured to sense a pressing force
applied to a touch region, and generate a corresponding electrical
signal. The signal detection circuit is electrically connected with
the force sensing component and configured to detect the electrical
signal generated by the force sensing component. The processing
chip is electrically connected with the signal detection circuit
and configured to determine whether to activate the force touch
function of the force touch display device or not according to the
electrical signal detected by the signal detection circuit.
At present, the force sensing component in the force touch display
device is usually a capacitive force sensing component or a
resistive force sensing component. Upon the touch region being
touched by a user, the capacitive force sensing component or the
resistive force sensing component generates a corresponding
electrical signal. However, the capacitive force sensing component
or the resistive force sensing component usually needs to be
pre-applied with a reference electrical signal during operation,
thus the capacitive force sensing component or the resistive force
sensing component is easy to be interfered by other electrical
signals (such as a voltage on the pixel electrode in the display
panel of the force touch display device) in the touch display
device or by external electrical signals during operation, so that
the force touch display device has poor anti-interference
capability. Moreover, because the capacitive force sensing
component or the resistive force sensing component has poor
anti-interference capability, the sensitivity and accuracy of the
capacitive force sensing component or the resistive force sensing
component for sensing the touch force are poor, that is, the force
touch display device has poor sensitivity and poor accuracy.
SUMMARY
The embodiments of the present disclosure provide a force touch
display device including a backlight module, the force touch
display device further includes a piezoelectric component and a
detection circuit, the piezoelectric component is on a reflection
sheet of the backlight module, the piezoelectric component is
configured to be deformed under an action of a pressing force and
generate an electrical signal corresponding to the pressing force,
and the detection circuit is electrically connected with the
piezoelectric component and configured to detect the electrical
signal generated by the piezoelectric component.
For example, the piezoelectric component includes a piezoelectric
film and a plurality of support members, the plurality of support
members are evenly distributed on a surface of the reflection sheet
facing a diffusion sheet of the backlight module, the piezoelectric
film is located on a surface of the reflection sheet facing away
from the diffusion sheet, and the piezoelectric film is
electrically connected with the detection circuit.
For example, the piezoelectric film is formed of piezoelectric
polymer material.
For example, the piezoelectric film is formed of polyvinylidene
fluoride.
For example, the piezoelectric film covers an entirety of the
surface of the reflection sheet facing away from the diffusion
sheet, or the piezoelectric film includes a plurality of
strip-shaped structures arranged in parallel with each other, each
of the strip-shaped structures is arranged corresponding to at
least one of the plurality of the support members, and each of the
strip-shaped structures is electrically connected with the
detection circuit; or the piezoelectric film includes a plurality
of block-shaped structures arranged evenly, each of the plurality
of block-shaped structures is arranged corresponding to at least
one of the plurality of support members, and each of the
block-shaped structures is electrically connected with the
detection circuit.
For example, the piezoelectric component includes a plurality of
support members evenly distributed on a surface of the reflection
sheet facing a diffusion sheet of the backlight module, the
plurality of support members are electrically connected with the
detection circuit, and the plurality of support members are formed
of piezoelectric material.
For example, each of the support members includes a base fixed on
the reflection sheet and a support post extending toward the
diffusion sheet, and the base is fixed on a surface of the
reflection sheet facing the diffusion sheet, or the reflection
sheet is provided with a plurality of recesses on a surface of the
reflection sheet facing the diffusion sheet, and the base is fixed
in a corresponding one of the plurality of recesses.
For example, the force touch display device further includes a
processing chip, the processing chip is electrically connected with
the detection circuit, and the processing chip is configured to
activate a force touch function of the force touch display device
according to the electrical signal generated by the piezoelectric
component and detected by the detection circuit.
The embodiments of the present disclosure provide a control method
of the force touch display device provided by the above-mentioned
technical solutions, includes: turning on the detection circuit;
allowing the piezoelectric component to be deformed under the
action of the pressing force and generate the electrical signal
corresponding to the pressing force; detecting, by the detection
circuit, the electrical signal generated by the piezoelectric
component.
For example, after detecting, by the detection circuit, the
electrical signal generated by the piezoelectric component, the
method further includes: comparing, by the processing chip, the
electrical signal detected by the detection circuit with a
threshold electrical signal; activating, by the processing chip, a
force touch function of the force touch display device when the
electrical signal detected by the detection circuit is greater than
or equal to the threshold electrical signal.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to clearly illustrate the technical solution of the
embodiments of the present disclosure, the drawings of the
embodiments will be briefly described in the following. Obviously,
the described drawings below are merely related to some of the
embodiments of the present disclosure without constituting any
limitation thereto.
FIG. 1 is a schematic view of a structure of a force touch display
device according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of a structure of another force touch
display device according to an embodiment of the present
disclosure;
FIG. 3 is a flowchart of a control method of a force touch display
device according to an embodiment of the present disclosure.
Reference numerals: 10--backlight module, 11--back plate,
12--reflection sheet, 13--diffusion sheet, 20--piezoelectric
component, 21--support member, 211--base, 212--support post,
22--piezoelectric film, 30--display panel, 31--array substrate,
32--color filter substrate.
DETAILED DESCRIPTION
In order to make objects, technical details and advantages of the
embodiments of the present disclosure apparent, the technical
solutions of the embodiments will be described in a clearly and
fully understandable way in connection with the drawings related to
the embodiments of the present disclosure. Apparently, the
described embodiments are just a part but not all of the
embodiments of the present disclosure. Based on the described
embodiments herein, those skilled in the art can obtain other
embodiment(s), without any inventive work, which should be within
the protection scope of the present disclosure.
Embodiments of the present disclosure provide a force touch display
device to solve the technical problem that a force touch display
device has weak anti-interference capability, poor sensitivity and
poor accuracy.
In the force touch display device provided by the embodiment of the
present disclosure, the piezoelectric component is deformed under
an action of a pressing force and generates an electrical signal
corresponding to the pressing force, and the electrical signal
generated by the piezoelectric component is detected by the
detection circuit. That is, in the force touch display device
provided by the present disclosure, the piezoelectric component
does not need to be pre-applied with a reference electrical signal
during operation, thus the piezoelectric component is not
interfered, by other electrical signals in the force touch display
device during operation (e.g., a voltage on a pixel electrode of a
display panel in the force touch display), or by external
electrical signal, so that the force touch display device has high
anti-interference capability. Meanwhile, the piezoelectric
component, in the force touch display device, provided by the
embodiment of the present disclosure, is not interfered by other
electrical signals in the force touch display device or external
electrical signals, and the piezoelectric component is deformed
under an action of a pressing force and generates a corresponding
electrical signal, so that sensitivity and accuracy are higher when
the touch or press is sensed by the piezoelectric component,
thereby improving the sensitivity and accuracy of the force touch
display device.
Embodiments of the present disclosure provide a control method of a
force touch display device, in order to solve the problem of weak
anti-interference capability of a force sensing component in
existing art, and of poor sensitivity and poor accuracy when a
pressing force is sensed by the force sensing component in existing
art.
The control method of the force touch display device has the same
advantages as the force touch display device described above,
without repeating herein.
Referring to FIG. 1 or FIG. 2, the force touch display device
provided by the embodiment of the present disclosure includes a
backlight module 10. The force touch display device further
includes a piezoelectric component 20 and a detection circuit, and
the piezoelectric component 20 is disposed on a reflection sheet 12
of the backlight module 10, the piezoelectric component 20 is
configured to be deformed under an action of a pressing force and
generate an electrical signal corresponding to the pressing force;
the detection circuit is electrically connected with the
piezoelectric component 20 and configured to detect the electrical
signal generated by the piezoelectric component 20.
For example, referring to FIG. 1 or FIG. 2, the force touch display
device provided by the embodiment of the present disclosure
includes a backlight module 10 and a display panel 30. The
backlight module 10 may be a edge-lit backlight module 10, in this
case, the backlight module 10 includes a back plate 11, a
light-emitting assembly (not shown in the figures) disposed in the
back plate 11, a reflection sheet 12, a light guide plate (not
shown), and a diffusion sheet 13. The reflection sheet 12 is
located on a bottom surface of the back plate 11. The reflection
sheet 12, the light guide plate, and the diffusion sheet 13 are
sequentially stacked. The light-emitting assembly is located in the
back plate 11 and on a side of the back plate 11, and a
light-emitting element of the light-emitting assembly faces a
surface of the light guide plate facing a side wall of the back
plate 11. Alternatively, the backlight module 10 may be a
direct-lit backlight module 10, in this case, the backlight module
10 includes a back plate 11 and a light-emitting assembly (not
shown) disposed in the back plate 11, a reflection sheet 12, and a
diffusion sheet 13. The reflection sheet 12 is disposed on a bottom
surface of the back plate 11, and the reflection sheet 12 and the
diffusion sheet 13 are sequentially stacked; a light-emitting
element of the light-emitting assembly is located on a side of the
reflection sheet 12 facing the diffusion sheet 13; the display
panel 30 is located on a light-exiting side of the backlight module
10; the backlight module 10 is configured to provide backlight for
the display panel 30 to achieve image display of the force touch
display device. The display panel 30 may be a liquid crystal
display panel. The liquid crystal display panel includes an array
substrate 31 and a color filter substrate 32. The array substrate
31 of the liquid crystal display panel is closer to the
light-exiting side of the backlight module 10 relative to the color
filter substrate 32. The force touch display device provided by the
embodiment of the present disclosure further includes a
piezoelectric component 20 and a detection circuit. The
piezoelectric component 20 is disposed on the reflection sheet 12
of the backlight module 10. It should be understood that the
piezoelectric component 20 may be integrated with the reflection
sheet 12 of the backlight module 10. When a user touches a touch
area of the force touch display device, the pressing force is
transmitted to the reflection sheet 12 of the backlight module 10,
the piezoelectric component 20 is deformed under an action of the
pressing force, and generates an electrical signal corresponding to
the pressing force; the detection circuit is electrically connected
with the piezoelectric component 20 and configured to detect the
electrical signal generated by the piezoelectric component 20.
It may be seen from the above that in the force touch display
device provided by the embodiment of the present disclosure, the
piezoelectric component 20 is deformed under an action of a
pressing force and generates an electrical signal corresponding to
the pressing force, and the electrical signal generated by the
piezoelectric component 20 is detected by the detection circuit.
That is, in the force touch display device provided by the present
disclosure, the piezoelectric component 20 does not need to be
pre-applied with a reference electrical signal during operation,
thus the piezoelectric component 20 is not interfered, by other
electrical signals in the force touch display device during
operation (e.g., a voltage on a pixel electrode of a display panel
30 in the force touch display), or by external electrical signals,
so that the force touch display device has high anti-interference
capability. Meanwhile, the piezoelectric component 20, in the force
touch display device, provided by the embodiment of the present
disclosure, is not interfered by other electrical signals in the
force touch display device or external electrical signals, and the
piezoelectric component 20 is deformed under an action of a
pressing force and generates a corresponding electrical signal, so
that sensitivity and accuracy are higher when the touch or press is
sensed by the piezoelectric component 20, thereby improving the
sensitivity and accuracy of the force touch display device.
In addition, in the force touch display device provided by the
embodiment of the present disclosure, the piezoelectric component
20 is deformed under an action of a pressing force and generates a
corresponding electrical signal, so that it only needs to provide a
structure with piezoelectric effect in the piezoelectric component
20 to sense a touch or press, without providing a plurality of
electrodes or a multi-layered film structure, the piezoelectric
component 20 has a simple structure. Moreover, the piezoelectric
component 20 is disposed on the reflection sheet 12 of the
backlight module 10, that is, the piezoelectric component 20 is
integrated with the reflection sheet 12 of the backlight module 10,
thereby simplifying the structure of the force touch display
device.
In the above embodiment, the piezoelectric component 20 may be
provided in various ways. Two exemplary arrangements are
exemplified below, but the arrangement of the piezoelectric
component 20 is not limited to the following two types.
First type: referring to FIG. 1, the piezoelectric component 20 may
include a piezoelectric film 22 and a plurality of support members
21, and the plurality of support members 21 are evenly distributed
on the surface of the reflection sheet 12 facing the diffusion
sheet 13 of the backlight module 10. The piezoelectric film 22 is
located on a surface of the reflection sheet 12 facing away from
the diffusion sheet 13, and the piezoelectric film 22 is
electrically connected with the detection circuit. During
operation, a user touches a touch area of the force touch display
device, and a pressing force of the user is transmitted to the
diffusion sheet 13, and then transmitted to the support members 21
and the reflection sheet 12, and acts on the piezoelectric film 22,
thus the piezoelectric film 22 is deformed by the action of the
pressing force, and generates an electric signal corresponding to
the pressing force, and the electric signal is detected by the
detection circuit.
In the first type, when the backlight module 10 is a direct-lit
backlight module 10, the support members 21 may be configured to
support the diffusion sheet 13 to maintain a certain distance
between the diffusion sheet 13 and the reflection sheet 12, and the
distance may be determined according to a light-mixing distance of
the light-emitting element.
In the first type, the piezoelectric film 22 may be formed of
various materials. For example, a forming material of the
piezoelectric film 22 may be piezoelectric ceramic, piezoelectric
polymer material or the like. For example, a forming material of
the piezoelectric film 22 is piezoelectric polymer. A forming
material of the piezoelectric film 22, for example, may be
polyvinylidene fluoride (PVDF). When the material for forming the
piezoelectric film 22 is selected as the piezoelectric polymer, the
formation of the piezoelectric film 22 can be facilitated, and the
thickness of the piezoelectric film 22 can be reduced.
In the first type, the piezoelectric film 22 may cover an entirety
of the surface of the reflection sheet 12 facing away from the
diffusion sheet 13. That is, the piezoelectric film 22 has a
monolithic structure; or, the piezoelectric film 22 may include a
plurality of strip-shaped structures arranged in parallel with each
other. Each of the plurality of strip-shaped structures corresponds
to at least one support member 21, and each of the plurality of
strip-shaped structures is electrically connected with the
detection circuit; or, the piezoelectric film 22 may include a
plurality of block-shaped structures evenly arranged, each of the
plurality of block-shaped structures corresponds to at least one
support member 21, and each of the block-shaped structures is
electrically connected with the detection circuit. When the
piezoelectric film 22 includes a plurality of strip-shaped
structures or a plurality of block-shaped structures, it is
convenient to determine the position where the user touches.
In the first type, the support member 21 of the piezoelectric
component 20 is adopted to transmit a pressing force to the
piezoelectric film 22 disposed on the surface of the reflection
sheet 12 facing away from the diffusion sheet 13, thereby realizing
the sensing of the pressing force. In practical applications, the
piezoelectric component 20 may also be adopted in the following
manner.
Second type: referring to FIG. 2, the piezoelectric component 20
may include a plurality of support members 21 uniformly distributed
on the surface of the reflection sheet 12 facing the diffusion
sheet 13 of the backlight module 10, the plurality of support
members 21 are electrically connected with the detection circuit,
and the plurality of support members 21 are formed of piezoelectric
material. During operation, a user touches a touch area of the
force touch display device, and a pressing force applied by the
user is transmitted to the diffusion sheet 13 and then transmitted
to the support member 21 to allow the support member 21 to be
deformed by the action of the pressing force, so that an electrical
signal corresponding to the pressing force is generated by the
support member 21 and detected by the detection circuit.
In the second type, the forming material of the support member 21
is selected as a piezoelectric material having a piezoelectric
effect, and the support member 21 is deformed by the action of the
pressing force, and generates an electrical signal corresponding to
the pressing force to realize the sensing of the pressing force.
Compared with the first type, the structure of the piezoelectric
component 20 in the second type is simpler.
Similarly, in the second type, when the backlight module 10 is a
direct-lit backlight module 10, the support member 21 can support
the diffusion sheet 13 to maintain a certain distance between the
diffusion sheet 13 and the reflection sheet 12, and the distance
may be determined according to a light-mixing distance of the
light-emitting element.
It is worth mentioning that in the second type, a forming material
of the supporting member 21 is a piezoelectric material. In
practical applications, the forming material of the supporting
member 21 may be a piezoelectric ceramic or a piezoelectric polymer
material.
Referring to FIG. 1 or FIG. 2, in the first or second type, the
support member 21 may include a base 211 fixed on the reflection
sheet 12 and a support post 212 extending toward the diffusion
sheet 13. Referring to FIG. 1, the reflection sheet 12 is provided
with a plurality of recesses on a surface of reflection sheet
facing the diffusion sheet 13, and the base 211 is fixed in a
corresponding recess. Alternatively, referring to FIG. 2, the base
211 may be fixed on the surface of the reflection sheet 12 facing
the diffusion sheet 13.
The force touch display device provided by the embodiment of the
present disclosure further includes a processing chip. The
processing chip is electrically connected with the detection
circuit. The processing chip is configured to activate a force
touch function of the force touch display device according to the
electrical signal generated by the piezoelectric component 20 and
detected by the detection circuit. For example, the detection
circuit is configured to detect the electrical signal generated by
the piezoelectric component 20 and to transmit the detected
electrical signal to the processing chip, and the processing chip
may process the electrical signal detected by the detection circuit
to determine whether to activate the force touch function of the
force touch display device or not. For example, the processing chip
is configured to compare the electrical signal detected by the
detection circuit with a threshold electrical signal, and when the
electrical signal detected by the detection circuit is greater than
or equal to the threshold electrical signal, it is determined that
the user needs to use the force touch function, the processing chip
activates the force touch function of the force touch display
device, so as to facilitate the user to use the force touch
function. For example, the force touch function is used to adjust
the brightness, volume or the like of the force touch display
device.
Referring to FIG. 3, an embodiment of the present disclosure
further provides a control method of the force touch display device
according to the above embodiment, including the following
steps.
Step S100, turning on the detection circuit.
Step S200, allowing the piezoelectric component to be deformed
under the action of the pressing force and generate the electrical
signal corresponding to the pressing force.
Step S300, detecting, by the detection circuit, the electrical
signal generated by the piezoelectric component.
The various embodiments in the specification are described in a
progressive manner, and the same or similar parts between the
various embodiments may be referred to each other, and each
embodiment focuses on the differences from the other embodiments.
In particular, for the method embodiment, because it is basically
similar to the device embodiment, the description is relatively
simple, and the relevant parts may be referred to the description
of the device embodiment.
It is worth mentioning that, in step S100, when the detection
circuit is turned on, the detection circuit may be turned on in
various manners. For example, a start button may be provided on the
force touch display device, when a user presses the start button,
the detection circuit is turned on. The detection circuit may
detect the electrical signal generated by the piezoelectric
component; or the detection circuit may be electrically connected
with a touch panel of the force touch display device, when a user
touches a touch area of the force touch display device, the touch
panel receives the electrical signal caused by press of the user.
At this time, the detection circuit is turned on, and the detection
circuit can detect the electrical signal generated by the
piezoelectric component.
Still referring to FIG. 3, after step S300 of detecting, by the
detection circuit, the electrical signal generated by the
piezoelectric component, the control method of the force touch
display device provided by the embodiment of the present disclosure
further includes the following steps.
Step S400: comparing, by the processing chip, the electrical signal
detected by the detection circuit with a threshold electrical
signal;
Step S500: activating, by the processing chip, a force touch
function of the force touch display device when the electrical
signal detected by the detection circuit is greater than or equal
to the threshold electrical signal.
The above are merely specific implementations of the present
disclosure without limiting the protection scope of the present
disclosure thereto. The protection scope of the present disclosure
should be based on the protection scope of the appended claims.
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